The Martian Enigmas, A Closer Look: The Face, Pyramids, and Other Unusual Objects on Mars, North Atlantic Books, 1991

The Many Faces of Mars: A Study in Planet Art / Self-published, 2001

The Little Book of Stars, Copernicus Books, 2001

The Galazy

The Cydonia Codex: Reflections from Mars (with William Saunders), North Atlantic Books, 2005

The Case for the Face: Scientists Examine The Evidence for Alien Artifacts on Mars (Editor with Monica Rix Paxson), Adventure Unlimited Press, 1998

Producer and Director of documentary film “Crop Circles: Quest for Truth”, 2002

Ocean Floor Mysteries: The Amazing Mystery of the Great FACE on the Pacific Ocean Floor

Mars/Earth Enigma: A Sacred Message to Mankind, Galde Press, 1996

Mars: The Living Planet (by Barry DiGregorio), Frog, Ltd., 1997, which includes a chapter written by Dr. Levin.